Fishing tool



H. DECKARD I FISHING TOOL Aug. 13, 1940.

, Filegi June 2a, 1938 2 Sheets-Sheet 1 In venior flomez'ieafiara g- 13,1 H. DECKARD 2.210,902

FISHING TOOL Filed June 28, 1938 2' Sheets-Sheet 2 MW 29m A tiqrneysPatented Aug. 13,1940

PATENT OFFICE 2,210,902 FISHING TOOL Homer Deckard, Robinson, 111.,assignor of onehalf to Claude L. Farnswo rth, Robinson, Ill.

. Application June 2a, 193:, Serial No. 216,385 1 0mm. (01. 294-102) Thepresent invention relates to new and useful improvements in fishingtools for recovering lost objects in oil and other deep wells and hasfor its primary object to provide, in a manneras hereinafter set forth,a device of this character embodying means whereby said device may beexpeditiously disconnected from the lost object when desired such, forexample, as when the object is stuck in the hole so'tightlythat itcannot be jarred loose.

Another very important object of the invention.

is to provide, in a fishing tool of the type including' a. plurality ofslidable slips for gripping the lost object, novel means for securingsaid-slips i in retracted or inoperative position when desired. Otherobjects of the invention are to provide a fishing tool of the characterdescribed which will be comparatively simple in construction, strong,durable, highly efllcient and reliable in use, compact and which may bemanufactured at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a'study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein: Figure 1 is a view in sideelevation of a fishing tool constructed in accordance with the presentinvention.

Figure 2 is a view in vertical section through the device, takensubstantially on-the line 2-2 of Fig. 1. v Figure 3 is a. view inhorizontal section, taken substantially on the line 8-3 of Fig. 2.Figure 4 is a horizontal sectional view, taken substantially on the'line4-4 of Fig. 2.

Figure 5 is a view in horizontal section, taken substantiallyon the line5-5 of Fig. 2-.

Figure 6 is a detail view in elevation of the slidable member.-

Referring now to the drawings in detail, it will be seen that theembodiment of the invention which has been illustrated comprises a bodyI of suitable metal having formed in the lower .portion thereof avertical cylinder 2. The body I has formed thereon aninclined shoulder 3from which an integral shank l rises. The shank 4 includes a squarelower portion 5 for receiving a wrench. On the upper end of theshank'lis the tapered, threaded male member 6 of the usual rod joint. 7

Depending from the lower end 0! the body I is an integral socket Ihaving vertical slots I in diametrically opposite sides thereof. Formedin the lower end portion of the socket I is an annular cam 8.

Mounted for vertical movement in the socket I 'is a metallic disk It. IThe disk III comprises 5 a reduced upper portion II providing an annularchamber in the upper portion of the socket I which accommodates a coilspring I2. Rising from the upper-portion II of the disk II is anintegral piston I! which is slidably engaged in 10 the cylinder 2. Thepiston It has formed therein at an intermediate point aoirc'umierentlalgroove II for the reception of plus I! which areslidably mounted in the lower portion of the body I. Vertical channelsI. are provided in the body I lb and mounted therein are springs if,said springs being engaged with-the plns' II in a manner toyieldinglyurge said pins inwardly.

1 The reference numeral I8 designates a pair oi arms which depend fromthe disk It. The arms I8 are secured to the disl'r It through the mediumof suitable element It. Segmental slips 20 are provided on the lowerends of the arms I8. It will be noted that the slips 2| aresubstantially semicircular and-it will also be observed that said 25slips are internally toothed for firmly gripping the lost object in thewell. Further, the slips II are provided with externally bevelled lowerportions 2| 'which are engageable with the annular cam 9. 30

It is thought that the operation of the device will be readily apparentfrom a consideration of the foregoing. when the tool is lowered into thewell the pins it are disengaged from the groove I4 and bear against theupper portion of the pis- 35 ton It, the disk ID with the slips thereonbeing in lowered position. Coil spring I2 yieldingly urges the disk I0downwardly in the socket I. Of course, the object to be recovered entersthe socket I and, when the device is lifted, said object 40 is firmlygripped between the slips 20 which are closed on said object by the cam9. Now, should i it be desired to release the lost object for any reasonthis may be expeditiously accomplished by utilizing the weight of thefishing stem to 45 force the body I and the socket I downwardly. whenthis is done the slips 20 release the lost obiect, the disk It isengaged with said object in a manner to .be raised thereby and thesprings II engage the pins Itin the groove ll of the piston 50 I3 forsecuring said slips in inoperative position, as shown to advantage inFig. 2 of thedrawlngs. The slots I facilitate the assembling of theslips III on the disk I! in the socket I.

It is believed'that the many advantages of a 55 fishing tool constructedin accordance with the present invention will be readily understood andalthough a preferred embodiment oi the device is as illustrated anddescribed, it is to be understood that changes in the details ofconstruction and in the combination and arrangement 01' parts may beresorted to which will fall within the scope of the invention asclaimed.

'What is claimed is: v

A fishing tool including a metallic body having a vertical cylinder inits lower portion, a socket member depending from said body, a diskmounted for reciprocation in the socket member, gripping membersdepending from said disk, the disk including a reduced upper portionengageable directly with the lower end of the body and providing anannular chamber in the socket member, a coiled spring mounted in theannular chamber and engaged with the disk for yieldingly urging saiddisk downwardly in the socket member, and a piston rising from thereduced portion of the disk and operable in the cylinder.

HOMER DECKARD.

